1

Trail Marathons in Glasgow and Strathclyde in April 2026

Find trail marathons in Glasgow and Strathclyde in April 2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

Filter by place

Filter by date

Filter by category

Map

Event listings

Select an event for photos, video, route, location, reviews, entry fees and how to enter.

Forge your legend at The Iron Keep: a 5-hour challenge to complete as many laps as you can, surrounded by trail running, medieval spectacle, and unforgettable adventure.
  • Sat 4 Apr
  • £52
Denny, North Lanarkshire, UK

The Iron Keep | 5 Hour Siege Run

Forge your legend at The Iron Keep: a 5-hour challenge to complete as many laps as you can, surrounded by trail running, medieval spectacle, and unforgettable adventure.

  • 5 hrs trail running
  • Families
  • Trees not tees
  • Dogs allowed at venue
  • Entertainment
  • Music
  • Chip timing
  • Enter online
  • Traffic free
  • Fancy dress
  • Event village
  • Event expo
  • Park
  • Free venue entry
  • Age 16 & over

Search options

Back to search options
4 steps to wellbeing
Sleep well

A good night's sleep is an essential foundation for a healthy lifestyle, effective training and weight control.

Train slow

Low-intensity training is easier for you, reduces the risk of injury and helps builds an efficient aerobic system.

Eat natural

Cut out sugar & junk food, reduce carbs, eat natural foods and train your body to burn fat for fuel.

Get outdoors

Fresh air, natural light and reconnecting with nature all help to improve mental and physical wellbeing.